4 pitchers were tied for winning the most games in May 2014, with 5 wins. The first three are Madison Bumgarner, Masahiro Tanaka and Rick Porcello.

	NAME	W	MONTH	L	W%	G	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Madison Bumgarner M. Bumgarner	5	May 2014	0	1.000	6	6	2.08	48	0	0	0	39.0	28	9	10	2	5	2	0	0	150	2	11.08	1.15	9.60	0.46	32.0	3.3	0.85	.280	2.31	6.46
2	Masahiro Tanaka M. Tanaka	5	May 2014	1	.833	6	6	1.88	42	1	1	0	43.0	36	9	11	2	6	1	0	0	168	4	8.79	1.26	7.00	0.42	25.0	3.6	0.98	.291	2.30	7.53
3	Rick Porcello R. Porcello	5	May 2014	1	.833	6	6	3.49	26	0	0	0	38.2	39	15	16	5	11	1	0	0	162	0	6.05	2.56	2.36	1.16	16.0	6.8	1.29	.286	3.72	9.08
4	Mark Buehrle M. Buehrle	5	May 2014	0	1.000	6	6	2.48	24	0	0	0	40.0	38	11	13	1	11	0	0	0	163	0	5.40	2.47	2.18	0.23	14.7	6.7	1.23	.291	2.93	8.55
5	J.A. Happ	4	May 2014	2	.667	6	6	4.09	29	0	0	0	33.0	36	15	15	6	14	0	0	0	146	0	7.91	3.82	2.07	1.64	19.9	9.6	1.52	.309	4.09	9.82
6	Jered Weaver J. Weaver	4	May 2014	1	.800	5	5	1.98	27	1	0	0	36.1	22	8	8	3	10	1	0	1	139	1	6.69	2.48	2.70	0.74	19.4	7.2	0.88	.194	1.98	5.45
7	Chris Young C. Young	4	May 2014	2	.667	6	6	3.40	17	0	0	0	39.2	28	15	15	7	11	1	0	0	156	0	3.86	2.50	1.55	1.59	10.9	7.1	0.98	.175	3.40	6.35
8	Corey Kluber C. Kluber	4	May 2014	0	1.000	6	6	2.09	60	0	0	0	43.0	34	10	10	3	8	0	0	1	167	1	12.56	1.67	7.50	0.63	35.9	4.8	0.98	.323	2.09	7.12
9	Dallas Keuchel D. Keuchel	4	May 2014	2	.667	6	6	2.14	34	2	1	0	46.1	32	11	12	1	7	1	0	0	172	0	6.60	1.36	4.86	0.19	19.8	4.1	0.84	.240	2.33	6.22
10	Jorge De La Rosa J. De La Rosa	4	May 2014	0	1.000	5	5	1.93	20	0	0	0	28.0	18	6	6	3	10	0	0	0	108	1	6.43	3.21	2.00	0.96	18.5	9.3	1.00	.200	1.93	5.79
11	Felix Hernandez F. Hernandez	4	May 2014	0	1.000	6	6	2.74	36	0	0	0	42.2	40	13	15	0	9	1	0	0	171	3	7.59	1.90	4.00	0.00	21.1	5.3	1.15	.320	3.16	8.44
12	Drew Pomeranz D. Pomeranz	4	May 2014	1	.800	6	5	2.70	26	0	0	0	26.2	20	8	8	3	12	0	1	0	108	0	8.78	4.05	2.17	1.01	24.1	11.1	1.20	.254	2.70	6.75
13	Travis Wood T. Wood	4	May 2014	2	.667	6	6	6.62	27	0	0	0	34.0	34	25	27	4	14	2	0	0	150	0	7.15	3.71	1.93	1.06	18.0	9.3	1.41	.291	7.15	9.00
14	Homer Bailey H. Bailey	4	May 2014	1	.800	6	6	4.26	27	0	0	0	38.0	37	18	18	3	13	0	0	1	160	1	6.39	3.08	2.08	0.71	16.9	8.1	1.32	.291	4.26	8.76
15	Hyun Jin Ryu H. Jin Ryu	3	May 2014	0	1.000	3	3	3.26	20	0	0	0	19.1	22	7	7	1	1	0	0	0	79	0	9.31	0.47	20.00	0.47	25.3	1.3	1.19	.368	3.26	10.24
16	Matt Shoemaker M. Shoemaker	3	May 2014	0	1.000	4	4	3.38	21	0	0	0	21.1	17	8	9	1	5	0	0	0	87	1	8.86	2.11	4.20	0.42	24.1	5.7	1.03	.267	3.80	7.17
17	Chase Anderson C. Anderson	3	May 2014	0	1.000	3	3	4.02	11	0	0	0	15.2	17	7	10	3	4	0	0	0	67	2	6.32	2.30	2.75	1.72	16.4	6.0	1.34	.286	5.74	9.77
18	Doug Fister D. Fister	3	May 2014	1	.750	5	5	3.34	23	0	0	0	29.2	30	11	13	5	2	1	0	0	122	1	6.98	0.61	11.50	1.52	18.9	1.6	1.08	.275	3.94	9.10
19	Josh Collmenter J. Collmenter	3	May 2014	0	1.000	5	5	2.90	17	1	1	0	31.0	25	10	14	5	5	0	0	0	121	0	4.94	1.45	3.40	1.45	14.0	4.1	0.97	.213	4.06	7.26
20	Drew Hutchison D. Hutchison	3	May 2014	1	.750	5	5	3.94	21	1	1	0	32.0	28	14	14	5	12	0	0	1	133	1	5.91	3.38	1.75	1.41	15.8	9.0	1.25	.242	3.94	7.88
21	Josh Tomlin J. Tomlin	3	May 2014	2	.600	5	4	3.04	22	0	0	0	26.2	22	9	12	5	4	0	1	1	107	0	7.43	1.35	5.50	1.69	20.6	3.7	0.98	.224	4.05	7.43
22	Jarred Cosart J. Cosart	3	May 2014	2	.600	5	5	2.76	15	0	0	0	29.1	28	9	11	0	15	1	0	0	126	2	4.60	4.60	1.00	0.00	11.9	11.9	1.47	.295	3.38	8.59
23	Wade Davis W. Davis	3	May 2014	0	1.000	9	0	0.00	19	0	0	0	12.0	3	0	0	0	0	0	0	0	38	1	14.25	0.00		0.00	50.0	0.0	0.25	.158	0.00	2.25
24	Zack Greinke Z. Greinke	3	May 2014	1	.750	5	5	2.35	30	0	0	0	30.2	29	8	10	2	8	1	0	0	125	1	8.80	2.35	3.75	0.59	24.0	6.4	1.21	.321	2.93	8.51
25	Shelby Miller S. Miller	3	May 2014	2	.600	5	5	4.94	20	0	0	0	27.1	29	15	16	2	11	1	0	0	119	1	6.59	3.62	1.82	0.66	16.8	9.2	1.46	.318	5.27	9.55